«A lean meat diet, on the other hand can not be tolerated; it leads to nausea in as little as three days, symptoms of starvation and ketosis in a week to ten days, severe debilitation in twelve days and possibly death in just a few weeks. (raising-rabbits.com)
Rarely, tapeworms may cause debilitation or weight loss if they are present in large numbers. (brittonroadveterinaryclinic.com)
When present, however, they can cause generalized debilitation for the birds. (glenerinanimalhospital.com)